+1 Weapon Creation

[panzhuli]

I'm very new to HLO and Pathfinder as well. My char found a +1 Longsword and I simply want to add it to my inventory. If I understand properly, +1 is the same as "masterwork" and is +1 to hit and +1 damage. First - is that correct? Second, I don't see any way to create these attributes in my custom weapon. Can someone help?

Thanks!